<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>
<body>
    <div id="app">
        <!-- 
            v-for 列表渲染(循环节点操作)
            语法格式: v-for="(元素,索引) in 需要循环的变量"
            key:'xxx'
         -->
         <!-- 循环一维数组 -->
         <ul>
            <li v-for="(item,index) in arr">
                {{ idnex }}=={{item}}
            </li>
         </ul>
         <ul>
            <li v-for="val in arr">
                {{val}}
            </li>
         </ul>

         <!-- 循环对象数组 -->
         <ul>
            <li v-for="(item,index) in brr">
                {{index}}=={{item.name}}--{{item.age}}
            </li>
         </ul>

         <!-- 循环对象 item 元素 key 键 ind是索引 -->
         <ul>
            <li v-for="(item,key,ind) in obj">
                {{ind}}--{{key}}--{{item}}
            </li>
         </ul>
    </div>
</body>
<script>
    new Vue({
        el:'#app',
        data:{
            arr:['刘','关','张'],
            brr:[
                { id:1,name:"狗蛋",age:20 },
                { id:1,name:"翠花",age:21 },
                { id:1,name:"旺财",age:20 }
            ],
            obj:{
                id:1,name:'哈哈',age:20
            }
        }
    })
</script>
</html>                          